Oil well pump



ENTOR.

3 Sheets-Sheet l BY EoF/-f/PY 6u YAsHE/a ,xlu aum MATTORNE ys.

OIL WELL PUMP G. G. BASHER Filed March l5, 1934 July 21, '1936.

July 21, 1936. G. cs alsl-IERl OIL WELL PUMP 3 Sheets-Sheet 2 Filed March '15, 19254 j: E f

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July 21,1936. G, Q BASHER 2,048,422

OIL WELL PUMP Filed March l5, 1934 3 Sheets-Sheet .'5

.35 In the said drawings,

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Patented July 21, 1936 UNITED STATES PATENT OFFICE e 2,048,422 e r 'Y on. WELL PUMP Geoffery Guy Basher, Bakerseld, Calif. Applieation March 15, 1934, sria1No.715,'z44 z claims. (c1. 10s-19o) My invention relates to oil` well pumps and t same relates more particularlyto double-acting pumps, and an object of the invention is to provide means whereby a relatively constant co1- umn of oil will be maintained in the entire system and drawn upon during the regular functioning of the pump and theoil thus continuously flowed fromthe well. y

An important feature of the invention attaches to the novelty residing in the pumping assembly,

the form of which is such that it maybe readily dropped to its working position and operatively correlated to the parts with which it is designed to co-act. 4

Astill further object is to provide a pumping assembly wherein means are employed for preventing leakage between the parts employed,

whereby to enable the plunger to operate with no appreciable loss of efficiency and with Va re- -`,20 `sulting uniform lift upon the oil.

With the above and other objects in view,

l which will appear as the nature of the'invention is better understood, the same consists `in the improved construction and novel arrangements 25 of parts which will hereinafter be fullydescribed and particularly pointed out in the 'accompanyingclaims. 1

In thedrawings has been illustrated a single and preferred embodiment of the invention, it

-30 being, however, understood that no limitations are necessarily made to the precise structural details therein exhibited, but that changes, alterations and modifications within the scope of the claims may be resorted to when desired.

Figure 1 is a vertical section through the upper part of the casing of a well showing the application of the invention thereto, the plunger being illustrated at the approximate positionthat it occupies at the beginning of its up stroke;

Figure 1A is a view similarV to Figure `1; illustrating the lower continuations of the parts;

Figures 2 and 2A are views similar to Figuresl i 45 and 1A, with the plunger occupying a down stroke position; Y

Figure 3 is a detail section of the i valve struc- `ture ofthe lliner assembly; Y Y

Figures 4 and 5 are cross-sectional views taken, respectively, on the lines 4'-4 and 5-5 of 'Figure 3; Figure 6 is a section `on the `line S-liof Figure 1;

Y Figure 7 is a section on the .une 1`- 1 of Figbarrel or cylinder |l is threadedly joined at 2| is provided with anv annular `series of stand- "ing valves 29. `between the outer walls vof the tube 2| rand the casing I5, tubing sections I6, pump barrel or cylinder Il, and sucker rod I8, the latter including a working valve I9. The lower end of the to a hollow, valved tube 2|, 'and at the bottom' of the latter is the downwardly taperedV nose 22,

adapted to seat within the correspondinglyvtapered seat 23 of the Vordinary form of shoe 24. The upper end of the tube 2| has an exteriorly threaded reduced portion 25 to which is attached 20 the cage of astanding valve 26, the ball 21 of which is adapted to coac't with the annular seat 28 formed upon the portion 25. It follows that because of the aforestated Vconstruction of the.A tube 2 the said standing valve is contained with-f Ain the lower endV of the pump barrel or cylinder 1 |1, whereit may operate to control communication between said barrel or cylinder and thebore 2|a of the tube`2|. The lower end of the tube..

These valves are thus disposed inner walls of the lower tubing section I6, and

the ports 30 lin the cages of. these valves are-35 adapted to discharge oil to the intervening space A betweensaid tube 2| and said lower tubing secftion I6. The elbows 3| of said valves' 29 open H into the bore 2 la of said tube, whereby communication may be established between said interven- 40 ing space A and the' said bore of4 the tube2`l,

as these valves function in practice.

" 'A Extending between adjacent tubing sections i6 and threadedly; connected therewith atV 32 and v 32a vis anvouter sealing liner 33 in which are Very 45 snugly iitted the Vcompanion inner sealing lliners 341-34, the lower one of which is threadedly connected at with the upper. end of the pump barrel or cylinder V|1and` it will be noted thatl just below said last named connectionV 35 and 50 formed in thesaid barrel ori cylinder i1 are ports .36 through which oil may find passage thereto from. the aforestated spaceA, The upper end of the upper one of said innersealing liners i has threadedly connected therewith a standing 55 low pump rod nds sliding passage through the cap of the cage structure of the valve 31, as at 31a, and Lthe said rod-thus constitutes a guide for the reciprocal valve ring 42 of saidA valve, whereby the ring may move to occupy either the Closed position shown in` Figure 2 or the open position shown in Figure 1. Now it willbe ob-v served that the lower one of the inner liners 34 is formed with an annular series iofslongitudinal ports 43 of arcuate form in planandvof large area, and that the other one of these inner liners is formed with similar ports 44, the upper ends of i which are adapted to open into the cage of theY valve"31 when'the valve ring'42 is open,'as shown lin Figure l. Said ring 42 is formed Vvirithfan' arinular tapered portion (Figures 3 and 8) adapted to co-act with av correspondingly formed's'eat 46' inthe upper'end of the. upper one of the said inner liners 34; The upper face of the lower one of the innerl liners34 and the lower face 'of the upper one. of these liners Vare spaced apart from ea'ch other to provide an intervening large chainber C ther'ebetween'V andsaid liners are connected bymeansiofa hollow tubular guide 41 through Y l'which and through the coaxial bores 48 of the liners 34 the' hollow pump rodY 39 freely passes, orderv that it may reciprocate as intended.

- This; rod proceedsinto the pump barrel or-cylinder t1, and same is fitted with an elongated'cylindrical plunger 48 in which'is formed a relatively "large-area axial bore 49, by-.means of which communication is established between the cylinder I1; above'thestanding valve 26, and the bore 2m of the'tubefZI. A

I wish to cal-l -particular attention to Ath'e'iact -that nose 22v has a Amaximum diameter which is -the sarneas that of the external diameterof the pumpcylinder vI"lf,--and that the standingvalves .-29 fall within the-boundary lineY oiga circle; the

diameter of which is not greater than the said .maximu-m diameter of thenose 22- orthat of said f. pump cylinder,Y whereby it mayV freely pass through the axial bore .of the'outer liner 34 when moving same fromthe we -.lowering the entire pumping .assembly into lor re- .I wish further to: stress the fact4 that the-joint 4between the exterior face .of upper end of the pump cylinder I1 and the interior face of vthe outerrliner 34 arefso closely or` snuglyrelated `to each-otheras topositivelyprevent any leakage therebetween and that, for like reason,A the walls ofthe bores. of the companionliners 34. fit-very closely, thercorrelated. external walls of the hollow pumprod 39.` v

. `Having thusfullydes'cribed the essentialstructural features of thepump andtheco-acting 1 relationshipoi one part tofthe. other,.the operation.' of lthe pump, will be brieiiy. butYV sufficiently 'set orthas follows:

f In' Figuresiand 1A the pumpassemblyY has l beengfully lowered toQa working. position and the plunger-48. is illustrated yas occupying Vthe begin- ,nineoflanupstmke Increment VIt follows that inthe Aupstrokg movement Of Said. plungena ng suction will .be induced; in Vthe Abarrel I1 that ,this will., exert a Closing P1111. 011 the S .andinavalves 29; The working. ,valre 1 I9Vv will close ras herein shown, in consequenceof fluid ,'forceyof suction created beneath same.

'stroke of'said'piston, the column of oil pressure exerted thereupon in the tubing I6, and the standing valve 26 will have assumed a position of open adjustment because of the suction induced in the barrel I1. The valve 42 will take an open position by reason of a lifting pressure formed in the ports 43 and 44.

The flow course is now upwardly through the tube 2 I, through the cage of the valve 26 and into the pump barrel. Oil obviously admitted to the said barrel abovethe plunger and Ythrough ports 36 will be forced upwardly through the ports 43 and 44 and will pass the valve 42 and enter the l,space Bin the tubing I6.

Because of the close t of the structural parts of the liner assembly, air and oil leakage between these parts Vand between the inner liners 34-34 will be effectively prevented so that the plunger 4iB-will constantly operate at maximum eiiiciency on both movements of the plunger.

`On the downstroke of said plunger 48 (Figures B. 'I'he valve I9 will open, likewise the standing vvalves Y29;.tl1e `latter'by Virtue of the suction induced at the ports 36 and the former by the action of pressureformed above said valve 21. The

ValveliZ will firmly close against its seat 46 by the The course of the flow is now fro-m the well, through the valves 29, then upwardly'r through space A into the portsI 36 and thence to the barrel I1, thereby replacing the oil discharged from the system on a previous upwardrmovement of the plunger. It

.isf because thereof that the entire system is constantly filled with'oil and thaton the two movements 'of the plunger as herein described oil will be continuously discharged from the system. "It should be particularly borne in mind that when dropping the'barrel I1 into the well to 'establishgregistration ofthe nose 22 with the shoe 24,` the cro-wn wall 26a of the cage of valve 26 is axially related to the lower nat uid-compressing end 48a of the valve 26, whereby to allow said end to be-forced against said crown wall with the result that said nose 22 will be rrnly driven home or'into operative co-action with the shee`24.

The entire pumping system is of simplelconstructiomtheparts employed being exceedingly sturdy and compactly. co-ordinated, and the pumping assembly, as well as the tubing string `herein employed, may be readily pulled from .the Iwell whenever desired.

,A Byspacing thev liners 34-34 from each other to providelthe aforementioned large diameter chamber@ between the opposed or confronting ends 'thereof. and between tube 41 and the inner .walls of the out'erliner 33, a relatively constant v,column of oil wouldl be maintained in said chamber so that the now of oil from the Spump will be continuous. During the downstroke.Y of piston 48, atwhich time oil willjbe sucked into thepump Vbarrel,a,colur,nn,cf oil will, Aform in the barrel directly. beneaththe portsV 43. During the upabovvelthe piston willbevforped against the column in said 'chamber C and the column Vin said chamber discharged into- Utheh space B throughthe standing "valve"42." In this manner and assuming` that a, column of oil is maintained in space Band inV the ow space between tubing I6 and casing I5, the column in space B will remain relatively constant. It will, therefore, be appreciated that a constant column of oil will be maintained in the pump from the bottom of the well to said space B and that in consequence thereof, the flow of oil from the system will be continuous in response to respective reciprocal movements of piston 48.

What is claimed is:

1. In an organization of the class described, an elongated outer tubular liner formed at its respective ends for attachment to axially spaced apart ends of respective sections of vertically alined tubing; a pair of axially spaced apart upper and lower inner liner frictionally fitting within the outer liner to provide a uid tight joint between the inner walls of the outer liner and the external walls of the inner liners, said inner liners formed with alined axial bores and each of said liners being of a length relative tol the length of the outer liner to provide an oil chamber Within the outer liner between confronting ends of the inner liners, a hollow tubular pump rod guide connecting the bores of said inner liners together; a pump rod movable through the axial bores of the inner liners and through the hollow tubular pump rod guide connecting the bores of said inner liners together; the pump rod guide and said axial bores serving to provide a long continuous bearing for the pump rod extending throughout the length of the outer liner, a pump barrel formed for attachment to the bottom of the lower inner liner; a piston at the lower end of the pump rod and reciprocable in the pump barrel; the inner liners having ports, the inner ends of which open to said chamber and the other ends thereof to the aforementioned pump barrel and a section of the tubing, respectively, for upward passage of oil to the chamber from said pump barrel and discharge of the oil into said tube section from said chamber, a valve for closing the ports of the upper inner liner during reciprocal movement of the piston in one direction and valve means for admitting fluid to said pump barrel.

2. A chamber forming and liquid by-passing organization for use with a double acting oil well pump employing tubing, a valved pump barrel therein and a piston in the barrel through which liquid can pass, the same having a valved rod formed for passage of liquid from the pump barrel when the piston is moved in one direction, comprising a long vertically disposed outer liner formed at its ends for connection with respective sections of the tubing above the pump barrel; and a plurality of short vertical inner liners disposed one above the other and frictionally tting the inner walls of the outer liner to provide a duid-tight connection therewith and Y 

